19905820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{90481}}^1$

素因数の和:90501

約数の個数: 24

約数和(自身を含む): 45602928

約数和(自身を除く): 25697108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 90481, 180962, 361924, 452405, 904810, 995291, 1809620, 1990582, 3981164, 4976455, 9952910, 19905820]

約数ペア:

[(1, 19905820), (2, 9952910), (4, 4976455), (5, 3981164), (10, 1990582), (11, 1809620), (20, 995291), (22, 904810), (44, 452405), (55, 361924), (110, 180962), (220, 90481)]